<?php

/**
 * ͼƬ����
 * @���� ���ṩ����֧�� ��Ȩ�빺��sho pnc��Ȩ
 * @license    http://www.33h ao.com
 * @link       ����Ⱥ�ţ�138 182 377
 */
defined('In33hao') or exit('Access Invalid!');

function get_height($image) {
	$size = getimagesize($image);
	$height = $size[1];
	return $height;
}

function get_width($image) {
	$size = getimagesize($image);
	$width = $size[0];
	return $width;
}

function resize_thumb($thumb_image_name, $image, $width, $height, $start_width, $start_height, $scale){
	$newImageWidth = ceil($width * $scale);
	$newImageHeight = ceil($height * $scale);
	if (C('thumb.cut_type') == 'im'){
		$exec_str = rtrim(C('thumb.impath'),'/').'/convert -quality 100 -crop '.$width.'x'.$height.'+'.$start_width.'+'.$start_height.' -resize '.$newImageWidth.'x'.$newImageHeight.' '.$image.' '.$thumb_image_name;
		exec($exec_str);
	}else{
		list($imagewidth, $imageheight, $imageType) = getimagesize($image);
		$imageType = image_type_to_mime_type($imageType);
		$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
		$white = imagecolorallocate($newImage, 255, 255, 255);
		imagefill($newImage, 0, 0, $white);
		switch($imageType) {
			case "image/gif":
				$source=imagecreatefromgif($image); 
				break;
		    case "image/pjpeg":
			case "image/jpeg":
			case "image/jpg":
				$source=imagecreatefromjpeg($image); 
				break;
		    case "image/png":
			case "image/x-png":
				$source=imagecreatefrompng($image); 
				break;
	  	}
	  	$dst_w = $dst_h = 0;
	  	if ($newImageWidth > $width) {
	  	    $dst_w = ($newImageWidth - $width)/2;
	  	}
	  	if ($newImageHeight > $height) {
	  	    $dst_h = ($newImageHeight - $height)/2;
	  	}
	  	if ($dst_w > 0) {
	  	    imagecopyresampled($newImage,$source,$dst_w,$dst_h,$start_width,$start_height,$width,$height,$width,$height);
	  	} else {
	  	    imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
	  	}

		switch($imageType) {
			case "image/gif":
		  		imagegif($newImage,$thumb_image_name); 
				break;
	      	case "image/pjpeg":
			case "image/jpeg":
			case "image/jpg":
		  		imagejpeg($newImage,$thumb_image_name,100); 
				break;
			case "image/png":
			case "image/x-png":
				imagepng($newImage,$thumb_image_name);  
				break;
	    }		
	}
	return $thumb_image_name;
}

/**
 * 生成缩略图
 * @author yangzhiguo0903@163.com
 * @param string     源图绝对完整地址{带文件名及后缀名}
 * @param string     目标图绝对完整地址{带文件名及后缀名}
 * @param int        缩略图宽{0:此时目标高度不能为0，目标宽度为源图宽*(目标高度/源图高)}
 * @param int        缩略图高{0:此时目标宽度不能为0，目标高度为源图高*(目标宽度/源图宽)}
 * @param int        是否裁切{宽,高必须非0}
 * @param int/float  缩放{0:不缩放, 0<this<1:缩放到相应比例(此时宽高限制和裁切均失效)}
 * @return boolean
 */
function img2thumb($src_img, $dst_img, $width = 75, $height = 75, $cut = 0, $proportion = 0)
{
	dd(22222);
	if(!is_file($src_img))
	{
		return false;
	}
	$ot = fileext($dst_img);
	dd($ot);
	$otfunc = 'image' . ($ot == 'jpg' ? 'jpeg' : $ot);
	$srcinfo = getimagesize($src_img);
	$src_w = $srcinfo[0];
	$src_h = $srcinfo[1];
	$type  = strtolower(substr(image_type_to_extension($srcinfo[2]), 1));
	$createfun = 'imagecreatefrom' . ($type == 'jpg' ? 'jpeg' : $type);

	$dst_h = $height;
	$dst_w = $width;
	$x = $y = 0;

	/**
	 * 缩略图不超过源图尺寸（前提是宽或高只有一个）
	 */
	if(($width> $src_w && $height> $src_h) || ($height> $src_h && $width == 0) || ($width> $src_w && $height == 0))
	{
		$proportion = 1;
	}
	if($width> $src_w)
	{
		$dst_w = $width = $src_w;
	}
	if($height> $src_h)
	{
		$dst_h = $height = $src_h;
	}

	if(!$width && !$height && !$proportion)
	{
		return false;
	}
	if(!$proportion)
	{
		if($cut == 0)
		{
			if($dst_w && $dst_h)
			{
				if($dst_w/$src_w> $dst_h/$src_h)
				{
					$dst_w = $src_w * ($dst_h / $src_h);
					$x = 0 - ($dst_w - $width) / 2;
				}
				else
				{
					$dst_h = $src_h * ($dst_w / $src_w);
					$y = 0 - ($dst_h - $height) / 2;
				}
			}
			else if($dst_w xor $dst_h)
			{
				if($dst_w && !$dst_h)  //有宽无高
				{
					$propor = $dst_w / $src_w;
					$height = $dst_h  = $src_h * $propor;
				}
				else if(!$dst_w && $dst_h)  //有高无宽
				{
					$propor = $dst_h / $src_h;
					$width  = $dst_w = $src_w * $propor;
				}
			}
		}
		else
		{
			if(!$dst_h)  //裁剪时无高
			{
				$height = $dst_h = $dst_w;
			}
			if(!$dst_w)  //裁剪时无宽
			{
				$width = $dst_w = $dst_h;
			}
			$propor = min(max($dst_w / $src_w, $dst_h / $src_h), 1);
			$dst_w = (int)round($src_w * $propor);
			$dst_h = (int)round($src_h * $propor);
			$x = ($width - $dst_w) / 2;
			$y = ($height - $dst_h) / 2;
		}
	}
	else
	{
		$proportion = min($proportion, 1);
		$height = $dst_h = $src_h * $proportion;
		$width  = $dst_w = $src_w * $proportion;
	}

	$src = $createfun($src_img);
	$dst = imagecreatetruecolor($width ? $width : $dst_w, $height ? $height : $dst_h);
	$white = imagecolorallocate($dst, 255, 255, 255);
	imagefill($dst, 0, 0, $white);

	if(function_exists('imagecopyresampled'))
	{
		imagecopyresampled($dst, $src, $x, $y, 0, 0, $dst_w, $dst_h, $src_w, $src_h);
	}
	else
	{
		imagecopyresized($dst, $src, $x, $y, 0, 0, $dst_w, $dst_h, $src_w, $src_h);
	}
	$otfunc($dst, $dst_img);
	imagedestroy($dst);
	imagedestroy($src);
	return true;
}

?>